CARACAS, March 7 (Xinhua) -- Venezuela, Cuba and Iran are studying how to add Bolivia, Ecuador and Nicaragua to their three-way alliance, visiting Venezuelan Minister of Mining and Basic Industries Jose Khan said in Teheran on Wednesday.

    At the fourth Venezuela-Iran joint meeting, Venezuela and Iran are set to sign another 20 new agreements, adding to the 152 conventions the two nations have already signed, Khan was quoted by the Venezuelan state Bolivarian News Agency as saying.

    The joint meeting, which began on Tuesday, drew over 100 delegates from the two countries to discuss the environment, agriculture, energy, petrol, communication, infrastructure, housing, industry and the economy.

    The two countries now have 27 agreements on agriculture, 26 on energy and petroleum, 22 on economic collaboration, nine on investment, nine on transport. The remaining accords cover trade, construction, tourism, science and technology, education, mining and health.